Insisting there were several witnesses keen to help police, and video evidence, she said she now simply wants action or warnings for others.

The grandmother said shop staff confirmed the attack was caught on CCTV but that after watching footage, officers were unable to transfer the files before it was routinely wiped. Contradicting this, a police spokesperson said the cameras were not working.

Warwickshire Police confirmed the dog attack on May 23 was being investigated and may fall under the Dangerous Dog Act. A statement read: “The victim’s dog was injured after being attacked by another dog and the victim sustained slight facial injuries.

“The owner of the offending dog left the scene.

Unfortunately there was no working CCTV available, and witnesses were only able to provide limited descriptions.

“The investigation is still very much ongoing with a number of lines of enquiry being pursued to trace the offender.”